Slide-best fok lathes



. Improved `SlidefRest for: Lathesfor Turning Iron;` and I1 do herebydeclare that the following isa full, clear, "and exact description ofthesame, reference being had tothe l annexed drawings, making a part ofthis specification, in which- Figure l "s "a3 plan` or Figs. 2 andByaretransverse vertical sections s if. `of the lathe"(`aa) (an) Fig.1,.showing the I5 l ing the plane of` section of Fig. 3;

plane of section of Fig. 2 and (y) (y) show- .n Similarjlettersofreferjence indicate cori respondingpartsin the several `figures.

i .Thesnature ofvmy invention consistsfin` the peculiarconstructionlofthe slide rest as i will be lhereafter ,shown-anddescribed,

whereby the edge of thecuttingtool may be i elevated or depressed withthe greatest facilityf and so fasto fbringthe edge of the cutting toolin fayprop erfrrelative position or gle with ,the article tobe turned..

To"""enable others fskilled in the, art to `lnalxe `and *use `my"finvention will"`proceed to describe lts construction and operation.

Arepresents the "cbed of an ordinary lathe n andB is a `carriage securedtothe bed so that itmay slide` thereon, the same as the carriage of theordinary-i slide rest. i

g` -`C is a sliding `boxgwhich is `fitted into 'the carriage Bin dovetail manner so "that said "box may be moyedforward and backward @"1 .ion the carriageiB inflafline,transversely with y *the bed Aof thllthe.Thefsliding-box is to bej operated screwl in `the`- usual- "fmanner,"Within `the sliding box C thereis placed smallshaftD having a screw Eupon it,

` see Figs." lfand 3. "The screw El gears into a toothed `.wheel F whichis placed within the box C. QThekwheel F gears intoa pinion `Gralso"withinftheboxC. `The screw E pinion G and shaft D are all securedto the bottom `oftheloox C' as clearly shown in Fig. 3

H is'ae ap pfale sliding bog c. To the `under surfaceof the top I-Ithere are secured arings (a) (a) which `aksmall shaft I s top view of alathe` `with my improved slide rest applied to it.

` Norris, or PITTSEIELD, MnssimilUsnms;` y

SLIDE-REST ron LATHES.

i MSpecicationof Letters Patent No. 12,742, dated April 17,1855.

` lits, said shaft I also passing through the sides of the box Candhaving a nut (b) at each end. The top Hconsequently fits between the twosides of the box and rests upon the shaft I, the bearings (a) (a) ofwhich are attached to about the center of the under side of the top. Tothe under side of the top'I-I there are also securedby pivots (c) (a)which work in proper bearings (d) (d) two nuts V(J) (J) one at the frontand the other` at the back end of the top H,`and within each nut a smallscrew rod K works. Each screw rod has a pinion L upon it, one of whichgears into the toothed wheel F and the other into the pinion G.

At the outer end of the shaft D there is secured a small hand wheel M.

To the upper surface of the top I-I the `cutting tool is secured in theusual or any proper"manner. The lower ends of the `small screw rods Kare properly stepped in the bottom of the box C, as shown in Fig. 3.

y `Operationz The carriage B `is moved longitudinally on the bed A by ascrew shaft inthe usual way and the sliding box `C is `also moved in aline transversely with the y bed Aby a screw as in ordinary slide rests.

In order to raise or lower the cutting edge of the tool the hand wheel Mis turned and the screw E rotates the wheel F which gives or` drawing itdown. The cutting edge of the tool therefore may be raised or lowered asdesired and brought to bear upon the work at the desired angle, see Fig.3, in which the circle (a) represents the article to be turned and (b)the cutting tool.

The above invention is extremely simple, will not add materially to theexpense of a lathe. l

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent, is,

Constructing the slide rest as herein shown," viz: having the top H ofthe sliding box C rest upon a shaft I and nolining or and presented in aproper position to the tiltilg said tlop by means if gie screw E,article to be turned. tootied Whee F pnions L, ,screw ro s K, K, andnuts J, J, substantially as herein OYRUS A' NOYES 5 shown, whereby theedge of the cutting tool l Witnesses:

which is secured on the upper surface of the JULIUS ROCKWELL, top H maybe raised' or lowered as desired ARNOLD PALMER, J r.

